Previously ,many people worked as private duty nurses rather than in hospitals in the US.
翻译:
以前在美国，许多人做私人专职护士，而不是在医院工作。
知识点解析:
连词/介词短语。rather than 意为“而不是”，连接两个平行的成分（这里连接了 as private duty nurses 和 in hospitals）。